Originally posted by rtstrading
"Or am i better off trading the SPY and QQQ instead as they would more closely mimic the corresponding indexes?"
I think your system would work fine on the SPY or QQQ. You do need to try some testing based upon realtime quotes however to determine slippage. Slippage due to the auction market bid/ask does make a big difference.
Also I hope your backtesting has looked at back and forward data not included in your optimized data set.
One possible way for you to test based upon realtime data is to use a simulator like, [ads]
This way you can really determine if your system is working and not risk your capital.
Good luck!
There's front end software that has the basket trade feature.
RTS Real Time is one and I believe TT and PATS as well.